Take out a few of the best-looking strawberries and set them aside for the garnish. Hull the remainder of the strawberries and cut each berry into thin slices.

With a hand mixer or in the bowl of a stand mixer, whip 3 1/2 cups of cream until it just holds stiff peaks. Add the confectioners sugar, vanilla, and rosewater (if using) and whip to combine.

Spread a small spoonful of whipped cream on the bottom of a 9 x 13-inch baking pan, or a similarly-sized platter. Lay down six graham crackers. Lightly cover the top of the graham crackers with more whipped cream, and then a single layer of strawberries. Repeat three times, until you have four layers of graham crackers. Spread the last of the whipped cream over the top and swirl it lightly with a spoon. Add a few more strawberries.

To make the ganache, heat the remaining 1/4 cup cream until bubbles form around the edges, then pour over the chopped chocolate. Let it stand for a few minutes, then whisk until the mixture is thick and glossy. Drizzle this over the layered dessert with a spoon, or transfer to a squeeze bottle and use that to drizzle.

Refrigerate for at least four hours, or until the crackers have softened completely. Garnish with additional berries.